Okla. Stat. tit. 19, § 19-865.68: Exclusive control

From and after the time such commission is constituted by the

cooperating governmental units, it shall have exclusive control for

the purposes herein provided over the territory within the

jurisdiction of the county to the exclusion of any other planning

agency, provided, however, this does not prevent commissioners from

contracting with agencies formed in accordance with Chapter 31,

Title 74, of the Oklahoma Statutes for planning services and

regulation enforcement assistance.